Friction-coupling.



No. 727,390. PATENTED MAY 5, 1903.

- A. LEIKEM.

FRICTION COUPLING.

APPLIUATION FILED MAY 12. 1902.

N0 MODEL. I 2 BHEETS-SHEET 1.

WITNESSES;

Tm: uonms PETERS c0 momma. WASHINGTON. n. c.

No. 727,390. 'PATENTED MAY 5, 1903.

l A. LEIKEM.

FRICTION COUPLING.

APPLICATION FILED MAY 12, 1902.

2 sHEn'rB-snnm 2.

N0 MODEL UNTTE STATES Patented May 5, 1903.

PATENT OFFICE.

ANTONLEIKEM, OF CHICAGO, ILLINOIS, ASSIGNOR OF TWO-TIIIRDS TO WILLIAM WILCOX AND JACOB W. STOLL, OF CHICAGO, ILLINOIS.

FRICTION-COUPLING.

SPECIFICATION forming part of Letters Patent No. 727,390, dated May 5, 1903.

Application filed May 12, 1902. $erial No. 106,910. (No model.)

To (0% whom it may concern:

zen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented a new and Improved Friction-Coupling, of which the following is a full, clear, and exact'description.

The invention relates to friction-clutches such as shown and described in the Letters Patent of the United States No. 671,219, granted to me April 2, 1901.

The object of the invention is to provide a new and improved friction-coupling which is simple and durable in construction, very off ective in operation, more especially designed to couple shafts together, and arranged to positively lock the driving-shaft to the driven shaft in case the contact friction-faces of the coupling members slip one on the other under a heavy load, and to insure proper friction contact of the friction-faces in case the shafts move out of longitudinal alinement.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part'of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal sectional elevation of the improvement. Fig. 2 is a reduced face view of the same, the shifting collar and cam-links being omitted. Fig. 3 is a like view of the driven member and its shaft, and

Fig. 4 is an enlarged sectional side elevation of the same on the line 4 4 of Fig. 3.

The friction-coupling shown in the drawings is designed to couple the driving-shaft A to the shaft 13 to be driven, and on the said with and to slide longitudinally on the friction-wheel O to clamp the rim D between the face 0 and the face F and couple the shaft A and its wheel 0 to the spider E and its shaft B.

On the clamping friction-face F are held eyebolts F, engaged by levers G, fulcrumedv at G on the outer face of the friction-wheel O, the said levers G being preferably arranged in pairs, connected with each other at their inner ends by a friction-roller G engaging a cam-groove H, formed on a cam I-I, fulcrumed at H on a bracket formed on the outer face of the friction-wheel C. The several cams H are pivotally connected by links I with a shifting collar J, mounted to slide on the shaft A and engaged by the usual shifting fork J under the control of the 0porator. Now when the collar J is moved inward in the direction of the arrow at toward the wheel C then the several links I impart a turning motion to the cams H, so that the lovers G are actuated to pull on the bolts F, so as to move the clamping friction-face F in firm contact with the friction-face D to move the rim D toward the wheel 0, and thus swing the friction-face D in firm contact with the friction-face 0. When the shifting collar J is moved outward in the inverse direction of the arrow (1,, then the cams H are turned in the opposite direction, so that the levers G move the clamping friction-face F away from the rim D to allow the latter to return to a normal position-that is, to move its frictionface D out of frictional contact with the face 0 of the friction-wheel C. l

The clamping friction-face F is formed with bearings F engaging guideways O on the rim of the friction-wheel C, so that when the latter is rotated the clamping friction-face F is carried along. At the same time the said clamping friction-face is free to slide longitudinally on the rim of the wheel 0, as will be readily understood by reference to Figs. 1 and 2.

The rim D, previously mentioned, is provided with blocks of wood D secured in the web of the rim, to allow of securing the faces D and D securely in position on the said blocks by the use of screws or like fastening devices. (See Fig. 4.) The faces D and D are prcferablyin the shape of rings made of fiber. The rim D is also provided at its inner edge with lugs D abutting against the sides of the arms of the spider E, (see Fig. 3,) to turn the spider when the rim is rotated from the wheel 0 and its clamping frictionface F, as previously explained, it being, however, understood that the rim D is free to slide longitudinally on the ends of the spiderarms, and the said rim is normally held against bolts D screwed in the spider-arms, by fiat springs K, secured to the spider-arms and pressing on the inner portion of the rim D. (See Figs. 1 and 3.) Now by adjusting the bolts D the desired amount of clearance to be given to the faces D D" relative to the friction-faces O and F can be readily determined, it being understood that when the collar J is moved in the inverse direction of the arrow a and the friction-face F moves away from the friction face D then the springs K return the rim D to its normal position'against the bolts D In order to lock the friction-wheel C positively to the rim D in case the friction-faces D D slip on the faces 0 F, I provide the following device: On the rim D are formed elongated openings D adjacent to the face 0 and adapted to be engaged by locking-bolts L, mounted to slide longitudinally in suitable bearings arranged on the friction-wheel O, the outer reduced end L of each bolt L carrying a spring N, engaged by a bell-crank lever P, fulcrumed at P on the outer face of the friction-wheel (J and carrying a frictionroller P engaging a cam H formed in the cam H. Now when the shifting collar J is moved in the direction of the arrow at to clamp the rim D between the faces 0 and F then each cam H imparts a swinging motion to its bell-crank lever P to cause the lever to compress the spring N, so that the bolt L is held in firm contact with the friction-face D, and in case the rim D slips between the faces 0 and F then the several bolts L will finally register with the recesses D and as the springs N are compressed by the levers P it is evident that the said bolts L then slide into the recesses D thus locking the friction-wheel O positively to the rim D.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A friction coupling, comprising two members of which one is driven and the other is to be driven, one of the members having a rim mounted to rotate with and to move longitudinally on its member, and springs engaging the rim to hold the latter in a normal position on its member, the other member of the coupling having a clamping part, the said rim being arranged to be clamped between the said member and its clamping part, as set forth.

2. A friction coupling, comprising two members, of which one is driven and the other is to be driven, one of the members having a rim mounted to rotate with and to move longitudinally on its member, springs for holding the rim in a normal position on its member, the other member of said coupling having a face adapted to be engaged by the said rim, and having a clamping part mounted to rotate with and to move longitudinally on its member, and arranged to clamp the said rim against the face of said member, as set' forth.

3. A friction-clutch, comprising a driving member having a fixed friction-face, and a movable clam ping friction-face, a member to be driven having a rim adapted to be clamped between the said faces of the driving member, the said rim being mounted to slide longitudinally on its member, and having lugs engaging arms on said member, whereby the rim and member turn together, adjusting devices for the said rim, means for normally holding the rim against the adjusting devices, and an operating device for moving the said clamping friction-face on the driving member, as set forth.

4. A friction-clutch, comprising a driving member having a fixed friction-face, and a movable clamping friction-face, a member to be driven, having a rim adapted to be clamped between the said faces of the driving member, the said rim being provided with recesses in its face, an operating device for moving the said clamping friction-face on the driving member, and a locking device controlled by the said operating device and comprising bolts carried by the driving member and arranged to engage the recesses in the rim to positively lock the driving member to the said rim, as set forth.

5. A friction-coupling, comprising a friction-wheel having a fixed friction-face, a clamping friction-face mounted to turn with and to slide longitudinally on the said friction-wheel, a rim having friction-faces on opposite sides and extending between the said friction-faces and the friction-wheel, and a spider having arms on the ends of which the said rim is mounted to slide longitudinally, the said rim being provided at its inner edge with lugs abutting against the sides of the arms of the spider and arranged to turn the spider when the rim is rotated, as set forth.

6. A friction-coupling, comprising a friction-wheel having a fixed friction-face, a clamping friction-face mounted to turn with and to slide longitudinally on the said frictiomwheel, a rim having friction-faces on opposite sides and extending between the said friction-faces and the friction-wheel, a spider on which the said rim is mounted to slide longitudinally and to turn with the spider, and springs on the said spider, engaging the said rim, to hold. the latter in a normal position on the spider, as set forth.

7. A friction-coupling, comprising a friction-wheel having a fixed friction-face, a clamping friction-face mounted to turn with and to slide longitudinally on the said friclion-wheel, a rim having triction-faces on opposite sides and extending between the said friction-faces and the friction-wheel, a spider on which the said rim is mounted to slide longitudinally and to turn with the spider, springs on the said spider, engaging the said rim, to hold the latter in a normal position on the spider, and adjusting devices on the said spider for the rim to rest on, as set forth.

8. A friction-coupling, comprising a friction-Wheel having a fixed friction-face, a clamping friction-face mounted to turn with and to slide longitudinally on the said friction-wheel, a rim having friction-faces on op-,

posite sides and extending between the clamping friction-face and the face of the frictionwheel, a spider on which the said rim is mounted to slide longitudinally and to turn with the spider, springs on the said spider engaging the said rim to hold the latter in a normal position on the spider, bolts adjustable in the spider-arms and against which the rim is normally held, and means for moving the clamping friction-face, as set forth.

9. The combination with the driving-shaft, and the shaft to be driven, of a friction-wheel secured to the driving-shaft, and having a fixed friction-face, a clamping friction-face mounted to turn with and to slide longitudinally on the said friction-wheel, the said clamping friction-face having bearings engaging guideways on the rim of the frictionwheel, eyebolts held on the clamping friction-face,levers engaging the eyebolts, means for actuating the levers to move the clamping friction-face, a member on the shaft to be driven, and a rim mounted to rotate with and to move longitudinally on said member, the said rim being adapted to be clamped between the said friction-faces, as set forth.

10. A friction-coupling, comprising a driving member having a fixed friction-face, and

a movable clamping friction-face, a member to be driven having a rim mounted to turn with and to slide longitudinally thereon, springson the said member and engaging the said rim to hold the latter, in a normal position, adjusting devices for the rim, the said rim extending between the friction-faces of the driving member, means for moving the said clamping friction-face, and a locking device controlled by said means and arranged to positively lock the driving member to the said rim, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ANTON LEIKEM.

Witnesses:

XVILLIAM WILooX, JACOB W. 803mm. 

